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Hitachi dv 10 dva Manual

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English
7. Mounting and dismounting of the bit.
(1) Mounting the bit
After inserting a driver bit, etc. into the keyless drill
chuck, firmly grasp the ring and tighten the sleeve
by turning it toward the right (in the clockwise
direction as viewed from the front). (See Fig. 7)
⅜ If the sleeve becomes loose during operation, tighten
it further. The tightening force becomes stronger
when the sleeve is tightened.
(2) Dismounting the bit
Firmly grasp the ring and loosen the sleeve by
turning it toward the left (in the counter-clockwise
direction as viewed from the front). (See Fig. 7)
CAUTION:
When it is no longer possible to loosen the sleeve,
use a vise or similar instrument to secure the bit.
Set the clutch mode between 1 and 3 and then turn
the sleeve to the loose side (left side ) while operating
the clutch. It should be easy now to loosen the
sleeve.
8. Confirm that the battery is mounted correctly.
9. Check the rotational direction
The bit rotates klockwise (viewed from the rear side)
by pushing the R-side of the selector button.
The L-side of the selector button is pushed to turn
the bit counterclockwise. (See Fig. 8). (The
and
marks are provided on the body.)
CAUTION:
Always use the impact drill with clockwise rotation,
when using it as an impact drill.
10. Switch operation
When the trigger switch is depressed, the tool rotates.
When the trigger is released, the tool stops.
⅜ The rotational speed of the drill can be controlled
by varying the amount that the trigger is pulled.
Speed is low when the trigger switch is pulled slightly
and increases as the trigger switch is pulled more.
⅜ When releasing the trigger of the switch, the brake
will be applied for immediate stopping.
11. For drilling into brick
Excessive pressing force never increases drilling
speed. It will not only damage the drill tip or reduce
working efficiency, but could also shorten the service
life of drill bit. Operate the impact drill within 10-
15 kg pressing force while drilling into brick.
MAINTENANCE AND INSPECTION
1. Inspecting the tool
Since use of as dull tool will degrade efficiency and
cause possible motor malfunction, sharpen or re-
place the tool as soon as abrasion is noted.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure
that they are properly tightened. Should any of the
screws be loose, retighten them immediately. Fail-
ure to do so could result in serious hazard.
3. Cleaning on the outside
When the impact drill is stained, wipe with a soft
dry cloth or a cloth moistened with soapy water.
Do not use chloric solvents, gasoline or paint thin-
ner, for they melt plastics.
4. Storage
Store the impact drill in a place in which the tem-
perature is less than 40°C and out of reach of
children.
NOTE
Due to HITACHI’s continuing program of reserch and
development, the specifications herein are subject to
change without prior notice.
Information concerning airborne noise and vibration
The measured values were detewmined according to
EN50144.
The typical A-weighted sound pressure level: 88 dB(A)
The typical A-weighted sound power level: 101dB (A)
Wear ear protection.
The typical weighted root mean square acceleration
value: 9.0m/s
2
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